Astro Pneumatic Tool 4538

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ECONOMY AIR UNDERCOAT GUN

• Applies a top quality undercoat to vehicles to fight rust and

stone chips

• Applies all popular brands of undercoat in any viscosity

• Unit comes with 2 tubes:

- 3-1/4" Long with 5/16" ID

- 7-1/4" Long with 1/4" ID

• Cap Thread Pitch: 1-3/4" x 6 UNS

• Quick disassembly for faster cleanups

• Weight: 0.65lbs

Page 1

4538

When unpacking, check the parts diagram and part number

listing on page 2 to make sure all parts are included. If any

parts are missing or damaged, please call your distributor.

Unpacking

www.astrotools.com

PLEASE DO NOT RETURN ANY PRODUCT WITHOUT CALLING

1-800-221-9705 FOR INSTRUCTIONS

• Astro Pneumatic Tool Co. warrants our products to the original user against

defective material or workmanship for a period of 1 year (except where noted on our

price schedule) from the date of 1st use. Astro reserves the right to determine

whether the product failed because of defective material, workmanship or other

causes and to charge back for missing parts. Astro Pneumatic Tool Co., at its

discretion, will repair products covered under this warranty free of charge. The

distributor should direct the original user to return the product (with the exceptions

listed below) with the distributor’s name, address, adequate proof of date of

purchase or a copy of warranty card, and a short note explaining the problem.

Failures caused by accident, alteration, or misuse are not covered by this

warranty.

• Astro Pneumatic Tool Co. or its authorized service representatives must perform all

warranty repairs. Any repair to the product by unauthorized service representatives

voids this warranty. The rights under this warranty are limited to the original user and

may not be transferred to subsequent owners.

• This warranty is in lieu of all other warranties, expressed or implied, including

warranties of merchantability and fitness for a particular purpose. Some states do

not allow the exclusion of limitations of incidental or consequential damages so the

above limitations may not apply to you.

1 YEAR LIMITED WARRANTY

Study, understand and follow all instructions provided with this product.

Read these instructions carefully before installing, operating, servicing

or repairing this tool. Keep these instructions in a safe accessible place.

Check gun and trigger prior to use to ensure unit is not damaged in any

way. It is recommended to use ANSI approved hearing safety protection

equipment

• Use of this product can expose you to chemicals such as

phthalates which are known to the State of California to

cause cancer, and birth defects or other reproductive harm.

For more information go to

www.P65Warnings.ca.gov/product.

Always wear appropriate safety equipment and clothing

when using this product. Study, understand and follow all

instructions provided with this product. Failure to read and

follow all warnings and operating instructions may result in

damages and serious injury or death.

• Always wear ANSI approved goggles when using this

product. (Users and Bystanders).

• Never use this tool for any application other than for

which it was designed.

• Only use accessories designed for this tool.

• Never alter or modify this tool in any way.

• Improper operation and/or maintenance of the tool,

modification of the tool, or use of the tool with accessories

not designed for it could result in serious injury or death.

• Always select the correct accessories of the correct size

and design for the job that you are attempting to perform.

• Always work in a clean, safe, well-lit, organized and

adequately equipped area.

• Do not begin repairs without assurance that vehicle is in

secure position, and will not move during repair.

PRODUCT INFORMATION:

This unit is designed to dispense undercoat material of

varied viscosity. Do not use this tool outside of the designed

intent. Never modify the tool for any other purpose or use.

INTENDED USE OF THE TOOL

WARNING

DO NOT DISCARD – GIVE TO USER

WARNING

1. Inspect gun prior to use to ensure unit is not damaged

in any way.

2. Attach the product being sprayed to the gun.

3. Connect the air inlet connector to the air source.

4. Press trigger and begin dispensing product.

5. When the job is completed make sure to close air source.

6. Clean unit before storing.

ECONOMY AIR UNDERCOAT GUN

APPLICATION:

MADE IN CHINA

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Do you have a question about the Astro Pneumatic Tool 4538 and is the answer not in the manual?

Summary

Safety and Operating Instructions

General Safety Warnings

Study and follow all instructions. Use ANSI approved hearing protection. Check gun for damage before use.

Intended Use of the Tool

This unit is designed to dispense undercoat material of varied viscosity. Do not use outside designed intent.

Personal Safety Precautions

Wear ANSI approved goggles. Do not alter tool. Work in a safe, clean area. Ensure vehicle is secure.

Product Information and Support

Product Details

Applies top quality undercoat to vehicles for rust and stone chips. Works with popular brands and viscosities.

Limited Warranty

Astro Pneumatic Tool Co. warrants products against defective material or workmanship for 1 year from the date of 1st use.

Unpacking Instructions

When unpacking, check the parts diagram and part number listing to ensure all parts are included.

Application Steps

Inspect gun, attach product, connect air, press trigger, close air source, and clean unit before storing.

Parts Identification

Component List

Detailed list of all components with part numbers, descriptions, and quantities for the undercoat gun.

The Astro Pneumatic Tool Company Model 4538 Economy Air Undercoat Gun is a specialized tool designed for applying undercoat material to vehicles. Its primary function is to help fight rust and stone chips by dispensing a top-quality undercoat. This gun is versatile, capable of applying all popular brands of undercoat regardless of their viscosity.

Function Description:

The gun operates by connecting to an air source and a container of undercoat material. When the trigger is pressed, the compressed air atomizes and propels the undercoat material through the nozzle, allowing for an even application onto vehicle surfaces. The design facilitates quick and efficient application, making it suitable for both professional and DIY use in automotive maintenance.

Important Technical Specifications:

Product Type: Economy Air Undercoat Gun
Model: 4538
Weight: 0.65 lbs
Cap Thread Pitch: 1-3/4" x 6 UNS
Included Tubes:
- One 3-1/4" long tube with a 5/16" inner diameter (ID)
- One 7-1/4" long tube with a 1/4" inner diameter (ID)
Components: The gun consists of a gun body, air nozzle, locking nut, material nozzle, suction tube, air inlet connector, opening stopper, trigger, trigger pin, O-rings (2.5 x 1.8 and 6.0 x 1.8), sealing gasket, air valve stem, air valve spring, and air valve seat.

Usage Features:

Versatility: Capable of handling undercoat materials of various viscosities, making it adaptable to different product types.
Ease of Assembly: The unit comes with two different sized tubes to accommodate various application needs.
Quick Disassembly: Designed for fast cleanups, which is crucial for maintaining the tool's performance and longevity, especially when working with viscous materials.
Simple Operation: The application process involves inspecting the gun, attaching the product, connecting to an air source, pressing the trigger to dispense, and then cleaning the unit after use.
Ergonomic Design: While not explicitly stated, the visual representation suggests a pistol-grip design for comfortable handling during operation.

Maintenance Features:

Easy Cleanup: The quick disassembly feature is a significant advantage for maintenance, allowing users to efficiently clean the gun after each use to prevent material buildup and clogging. This is essential for ensuring consistent performance and extending the tool's lifespan.
Part Replacement: The detailed parts breakdown and list indicate that individual components can be identified and potentially replaced, facilitating repairs and prolonging the tool's service life.
Regular Inspection: Users are advised to inspect the gun prior to each use to ensure it is not damaged, which is a key aspect of preventative maintenance.

Safety Information:

The manual emphasizes several critical safety warnings:

Read Instructions: Users must study, understand, and follow all instructions to prevent injury or death.
Personal Protective Equipment (PPE): Always wear ANSI approved goggles and appropriate safety equipment and clothing.
Chemical Exposure: The product may expose users to chemicals like phthalates, known to cause cancer and birth defects, as per California's Proposition 65. Users are directed to www.P65Warnings.ca.gov/product for more information.
Intended Use: The tool is strictly designed for dispensing undercoat material and should not be modified or used for any other purpose.
Tool Integrity: Ensure the gun and trigger are not damaged before use.
Work Environment: Work in a clean, safe, well-lit, organized, and adequately equipped area.
Vehicle Stability: Do not begin repairs without ensuring the vehicle is in a secure position and will not move.
Unauthorized Repairs: Any repairs performed by unauthorized service representatives will void the warranty.

Warranty Information:

Astro Pneumatic Tool Co. offers a 1-year limited warranty to the original user against defective material or workmanship from the date of first use. The warranty covers repairs free of charge at Astro's discretion. Failures due to accident, alteration, or misuse are not covered. The warranty is limited to the original user and cannot be transferred. It is in lieu of all other warranties, expressed or implied, including merchantability and fitness for a particular purpose. Users are advised to call 1-800-221-9705 for instructions before returning any product.

In summary, the Astro Pneumatic Tool Company Model 4538 is a robust and user-friendly air undercoat gun designed for effective vehicle protection against rust and stone chips. Its ease of use, versatility with different undercoat viscosities, and straightforward maintenance procedures make it a practical tool for automotive applications, all while emphasizing critical safety protocols for user protection.